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From d2ccb3209c62de4292107df4207c02ee59dc11a9 Mon Sep 17 00:00:00 2001
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From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
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Date: Mon, 2 Jul 2012 11:19:22 +0200
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Subject: [PATCH 004/482] * include/grub/list.h
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(FOR_LIST_ELEMENTS_SAFE): New macro. * include/grub/command.h
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(FOR_COMMANDS_SAFE): Likewise. * grub-core/commands/help.c
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(grub_cmd_help): Use FOR_COMMANDS_SAFE.
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---
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grub-core/commands/help.c | 5 +++--
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include/grub/command.h | 1 +
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include/grub/list.h | 1 +
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3 files changed, 5 insertions(+), 2 deletions(-)
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diff --git a/grub-core/commands/help.c b/grub-core/commands/help.c
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index d64c289..f0be89b 100644
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--- a/grub-core/commands/help.c
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+++ b/grub-core/commands/help.c
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@@ -99,12 +99,13 @@ grub_cmd_help (grub_extcmd_context_t ctxt __attribute__ ((unused)), int argc,
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else
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{
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int i;
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- grub_command_t cmd_iter, cmd;
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+ grub_command_t cmd_iter, cmd, cmd_next;
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for (i = 0; i < argc; i++)
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{
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currarg = args[i];
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- FOR_COMMANDS(cmd_iter)
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+
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+ FOR_COMMANDS_SAFE (cmd_iter, cmd_next)
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{
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if (!(cmd_iter->prio & GRUB_COMMAND_FLAG_ACTIVE))
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continue;
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diff --git a/include/grub/command.h b/include/grub/command.h
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index 6d43499..8705a63 100644
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--- a/include/grub/command.h
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+++ b/include/grub/command.h
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@@ -121,6 +121,7 @@ grub_command_execute (const char *name, int argc, char **argv)
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}
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#define FOR_COMMANDS(var) FOR_LIST_ELEMENTS((var), grub_command_list)
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+#define FOR_COMMANDS_SAFE(var, next) FOR_LIST_ELEMENTS_SAFE((var), (next), grub_command_list)
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void grub_register_core_commands (void);
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diff --git a/include/grub/list.h b/include/grub/list.h
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index cadb2d9..6f6dec0 100644
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--- a/include/grub/list.h
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+++ b/include/grub/list.h
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@@ -35,6 +35,7 @@ void EXPORT_FUNC(grub_list_push) (grub_list_t *head, grub_list_t item);
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void EXPORT_FUNC(grub_list_remove) (grub_list_t item);
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#define FOR_LIST_ELEMENTS(var, list) for ((var) = (list); (var); (var) = (var)->next)
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+#define FOR_LIST_ELEMENTS_SAFE(var, nxt, list) for ((var) = (list), (nxt) = ((var) ? (var)->next : 0); (var); (var) = (nxt), (nxt) = (var)->next)
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static inline void *
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grub_bad_type_cast_real (int line, const char *file)
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--
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1.8.2.1
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